Grades are a hygiene check, not a security guarantee.

MCP, MCP server

3D Printing Ops

Practical 3D printer operations for AI agents and humans.

Compatibility: Not stated.

Grade C

One Medium finding. Read the report before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    mcp/klipper-ops-server/src/klipper_ops_mcp/operations.py, line 172 shutil.rmtree(backup_root)

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files. requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES

    mcp/klipper-ops-server/src/klipper_ops_mcp/operations.py, line 172

    shutil.rmtree(backup_root)

    mcp/klipper-ops-server/src/klipper_ops_mcp/operations.py, line 226

    shutil.rmtree(temporary)

    mcp/klipper-ops-server/src/klipper_ops_mcp/operations.py, line 228

    shutil.rmtree(old)

    Show more

    mcp/klipper-ops-server/src/klipper_ops_mcp/remote.py, line 88

    result = subprocess.run(command, capture_output=True, timeout=timeout, check=False)

    mcp/klipper-ops-server/src/klipper_ops_mcp/remote.py, line 256

    shutil.rmtree(stage)

    mcp/klipper-ops-server/src/klipper_ops_mcp/remote.py, line 273

    shutil.rmtree(stage)

    mcp/klipper-ops-server/src/klipper_ops_mcp/transport.py, line 83

    result = subprocess.run(

    scripts/validate-project.py, line 70

    subprocess.run(["bash", "-n", str(script)], check=True)

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    mcp/klipper-ops-server/src/klipper_ops_mcp/cli.py, line 74

    ".env",

    mcp/klipper-ops-server/src/klipper_ops_mcp/config.py, line 37

    ENV_FILES = (".env", ".klipper-ops.env", ".klipper-ops.local.env")

    .gitignore, line 11

    # Local printer workspace state

    Show more

    CHANGELOG.md, line 57

    - Changed dotenv precedence to `.env`, `.klipper-ops.env`, `.klipper-ops.local.env`, then exported process environment.

    CHANGELOG.md, line 142

    - Workspace env loading from `.env`, `.klipper-ops.env`, and `.klipper-ops.local.env`.

    README.md, line 152

    1. .env

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 6395cd55962c. can delete files. requests shell access. No manifest field names shell or command execution. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 6395cd55962c30aa9941fd840578f8a6962f2f33

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen